Gaya APA
Systematic counseling. (1978).
New Jersey:
Prentice Hall Inc..
Gaya Chicago
Systematic counseling.
.
New Jersey:
Prentice Hall Inc.,
1978.
Buku.
Gaya MLA
Systematic counseling.
.
New Jersey:
Prentice Hall Inc.,
1978.
Buku.
Gaya Turabian
Systematic counseling.
New Jersey:
Prentice Hall Inc.,
1978.
Buku.